zero-gravity switch

In order to greatly enhance the zero-sequence current active component during the single-phase ground fault, the short-time switch and the resistance paralleled with the petersen coil were controlled when there is a permanent single-phase ground fault in the system.

该方法当系统发生永久性单相接地故障时通过控制开关短时投切与消弧线圈并联的电阻，从而大大增强单相接地故障时的零序电流有功分量。

Research on Operation Characteristics of the Three-level Zero-Current-Switch Charging Structure

三电平ZCS充电结构的工作特性研究

TSC trigger circuit was designed, including the zero-crossing detection circuit and thyristor trigger circuit. And contactor was combined with the thyristor switch used in TSC.

设计了TSC触发电路，其中包括过零检测电路与晶闸管触发电路，并将接触器与晶闸管组合成复合开关应用在电容器投切中。

By programming simulation, the single-grade and multi-grade circuits are analy-zed, and it is the best moment for thyristor to switch on when the voltage of capacitor to be shorted is zero.

采用编程仿真的方式，对单级电路和多级电路分析后，提出了晶闸管开关最佳接入时刻为被短接电容电压为零时；

Zero Point Switch and Its Application in Power Grid System

零点开关及其在电网中的应用